Question

A soccer team has played 25 games and has won 60% of the games it has played. What is the minimum number of additional games the team must win in order to finish the season winning 80% of thegames it has played?

(A) 28
(B) 25
(C) 21
(D) 18
(E) 15

Answer 1

The team must win 25 games to finish the season winning 80% of the games

Step-by-step explanation:

The soccer team has won 60%, that is:

25 games * 60% = 15 games has won.

We can solve this problem with the equations:

25 games + X = Y (1)

Where Y are total games, and X the additional games the soccer team must win.

15 games + X = 0.8Y (2)

In therms of winning games.

Subtracting 1 - 2:

10 games = 0.2Y

50games = Y

And X is:

25 games + X = Y (1)

25 games + X = 50games (1)

X = 25 games

The team must win 25 games to finish the season winning 80% of the games